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Power - Triode (over 1000V 100W) ·Triode

849H

High-frequency variant of the 849-A transmitting triode with altered capacitances and grid connection.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
-
Base pins
3
Nominal heater
10 V / 11.5 A

Description

High-frequency variant of the 849-A transmitting triode with altered capacitances and grid connection.

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
-
Base pins
3
Nominal heater voltage
10 V
Nominal heater current
11.5 A
Parallel heater voltage
-
Parallel heater current
-
Series capable
No

Terminal pinout

Electrical assignments shared by every tube using this base designation.

No verified pinout is recorded for this base designation.

Section ratings

1 physical section, each with unique specifications.

Section 1

Triode

X-ray radiationInterelectrode capacitances
Transconductance
0.0076 S
Amplification factor
19
Max plate voltage
4000 V
Max plate dissipation
500 W
Max cathode current
500 mA

Promoted ratings and characteristics mapped from source tables.

Source-dependent data

Operating conditions by source

Each block preserves the test conditions and published values from one reference. Values from different sources are intentionally kept separate.

Data set 01

1953 Amperex

Published operating points and test conditions from this source.

SECTION 1

Triode

Capacitance

  • Grid To Plate Capacitance

    11.5 pF

    Published direct interelectrode capacitance

  • Grid To Filament Capacitance

    10 pF

    Published direct interelectrode capacitance